Rod-adjuster and clamp for artesian or oil wells



(No Model.)

G. S. GAHAGAN. ROD ADJUSTER AND CLAMP FOR ARTBSIAN QR OIL WELLS.

No. 499,670. Patented June 13, 1893.

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UNITE STATES ATENT FFICE.

GILES SKIMER GAHAGAN, OF BUTLER, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 499,670, dated June 13,1893.

Application filed January 13, 1893. Serial No. 458,290 (No model.)

To all whom. it may concern:

Be it known that 1, Games SKI'MER GAHA- GAN, a citizen of the UnitedStates, residing at Butler, in the county of Butler and State ofPennsylvania, have invented a new and useful Rod-Adjuster and Clamp forArtesian or Oil Wells, of which the following is a specification.

This invention relates to rod adjusters and clamps for Artesian or oilwells; and it has for its object to provide a combined adjuster andclamp adapted for gripping and adjusting the pump or polish rod ofArtesian or oil wells in pumping the same.

To this end the invention contemplates certain improvements in devicesof this character which connect the pump or polish rod with the walkingbeam of the operating mechanism so that the rod can be adjusted andgripped in any position while standing on the derrick floor, and thusavoiding the danger attendant upon going out on the walking beam itselfto adjust the rod by the clamp at the end of such beam as is now usuallydone.

With these and other objects in View which will readily appear as thenature of the invention is better understood, the same consists in thenovel construction, combination and arrangement of parts hereinaftermore fully described, illustrated and claimed.

Figure 1 is a front View of a combined rod adjuster and clampconstructed in accordance with this invention. Fig. 2 is a centralvertical longitudinal sectional view thereof. Fig. 3 is a transversesectional view on the line xw of Fig. 2. Fig. 4 is a detail inperspective of the intermediate combined stirrup and rod brace.

Referring to the accompanying drawings, A represents a metal stirrupcomprising the opposite stirrup arms B, connected at their upper ends bythe integral rounded bearing bar or cross-piece C, which is mounted inthe usual bearings at one end of the walking beam, so that the oppositearms B, can embrace the walking beam, which thereby serves to steady thesupported stirrup. The opposite stirrup arms B, converge, and terminateat'their lower adjacent ends in the opposing flattened clamp-heads D,each of which is provided with a semi-circular clamp groove E,corresponding with the groove in the opposite head, both of the groovesbeing designed to receive the round piston or polish rod F, of Artesianor oil well pumps, which rod is designed to be clamped firmly inposition between said heads. Clamping bolts G, pass through the oppositeheads D, on each side of the grooves therein, and provide means wherebythe said rod F, can be tightly gripped, or clamped, in any adjustedposition without the possibility of slipping.

At a suitable intermediate point, the opposite stirrup arms B, of thestirrup, are connected and firmly braced by the intermediate brace barH. The brace bar H, has flanged ends h, riveted to the inner sides ofthe arms B, and is further provided in one side thereof with a notch l,which receives the upper portion of the piston or polish rod F, whichprojects into the stirrup. A removable brace plate J, is suitablyclamped in position on top of the brace bar H, and is provided-in oneedge thereof with a notch K, opposing that in the brace bar and alsoembracing the piston or. polish rod. By reason of the combined stirrupand rod brace just described, the arms of the stirrip are not onlybraced together, but the rod itself is so braced as to be prevented frombending, and possibly breaking. By loosening the clamping bolts G, therod F can be readily adjusted when desired,and in replacing a rod thebrace plate referred to can be removed.

Changes in the form, proportion and the minor details of constructionmay be resorted to, Without departing from the principle or sacrificingany of the advantages of this invention.

Having thus described my invention, What I claim, and desire to securebyLetters Patent, is-

1. In a combined rod adjuster and clamp,a metal stirrup having oppositeconverging stirrup arms terminating in grooved clamp heads adapted toadj ustably grip the pump rod, and a sectional brace arranged inside ofthe stirrup intermediate of its ends and secured to the inner sides ofthe stirrup arms, said brace comprising separate superposed members bothof which embrace the pump rod, substantially as set forth.

2. In a combined rod adjuster and clamp, a metal stirrup adapted toembrace the Walking beam of a well apparatus and having oppositeconverging arms terminating in grooved clamp heads adapted to adjustablygrip the pump rod, an intermediate brace bar secured at its ends to theinner sides of said arms and having a notch at one side to receive thesaid pump rod, and a removable brace plate clamped on said brace bar andhaving an oppositely disposed notch in one side also embracing the pumprod, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

GILES SKIMER GAHAGAN.

YVitnesses:

CLARENCE WALKER, L. P. WALKER.

